diff --git a/FindFunction.ql b/FindFunction.ql
new file mode 100644
index 0000000..67cb1a0
--- /dev/null
+++ b/FindFunction.ql
@@ -0,0 +1,12 @@
+/**
+ * @name Find Function
+ * @description List certain functions in a DB
+ * @kind problem
+ * @id csharp/intro/FindFunction
+ * @problem.severity warning
+ */
+
+import csharp 
+
+from Method me 
+select me, "Method found"
diff --git a/SqliDemo/Injectable.cs b/SqliDemo/Injectable.cs
index 46983ed..e590051 100644
--- a/SqliDemo/Injectable.cs
+++ b/SqliDemo/Injectable.cs
@@ -19,29 +19,29 @@ class Injectable
         return Process.GetCurrentProcess().Id;
     }
 
-static void WriteInfo(int id, string info)
-{
-    const string connectionString = "Data Source=users.sqlite";
-    using (var connection = new SqliteConnection(connectionString))
+    static void WriteInfo(int id, string info)
     {
-        connection.Open();
-        // '{info.Replace("'", "''")}')" has no vulnerability
-        string query = $"INSERT INTO users VALUES ({id}, '{info}')";
-        Console.WriteLine($"Running query: {query}");
-
-        using (var command = new SqliteCommand(query, connection))
+        const string connectionString = "Data Source=users.sqlite";
+        using (var connection = new SqliteConnection(connectionString))
         {
-            try
+            connection.Open();
+            // '{info.Replace("'", "''")}')" has no vulnerability
+            string query = $"INSERT INTO users VALUES ({id}, '{info}')";
+            Console.WriteLine($"Running query: {query}");
+
+            using (var command = new SqliteCommand(query, connection))
             {
-                command.ExecuteNonQuery();
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine($"Error executing query: {ex.Message}");
+                try
+                {
+                    command.ExecuteNonQuery();
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"Error executing query: {ex.Message}");
+                }
             }
         }
     }
-}
 
 
     static void Main()
diff --git a/admin b/admin
new file mode 100755
index 0000000..5d3b70d
--- /dev/null
+++ b/admin
@@ -0,0 +1,60 @@
+#!/bin/bash
+
+set -e
+
+script=$(basename "$0")
+
+GREEN='\033[0;32m'
+MAGENTA='\033[0;95m'
+NC='\033[0m'
+RED='\033[0;31m'
+YELLOW='\033[0;33m'
+
+help() {
+    echo -e "Usage: ./${script} [options]" \
+         "\n${YELLOW}Options: ${NC}" \
+         "\n\t -h  ${GREEN}Show Help ${NC}" \
+         "\n\t -c  ${MAGENTA}Creates a users table ${NC}" \
+         "\n\t -s  ${MAGENTA}Shows all records in the users table ${NC}" \
+         "\n\t -r  ${RED}Removes users table ${NC}" 
+}
+remove-db () {
+    rm users.sqlite
+}
+
+create-db () {
+    echo '
+    CREATE TABLE users (
+        user_id INTEGER not null,
+        name TEXT NOT NULL
+    );
+    '  | sqlite3 users.sqlite 
+}        
+
+show-db () {
+    echo '
+    SELECT * FROM users;
+    ' | sqlite3 users.sqlite 
+}
+
+if [ $# == 0 ]; then 
+   help
+   exit 0
+fi
+
+while getopts "h?csr" option
+do
+    case "${option}"
+    in
+        h|\?)
+            help
+            exit 0
+        ;;
+        c)  create-db
+        ;;
+        s)  show-db
+        ;;
+        r)  remove-db
+        ;;
+    esac
+done
diff --git a/admin.ps1 b/admin.ps1
new file mode 100644
index 0000000..008e2c3
--- /dev/null
+++ b/admin.ps1
@@ -0,0 +1,92 @@
+# Set strict mode to stop execution on errors
+Set-StrictMode -Version Latest
+
+# Script name
+$script = $MyInvocation.MyCommand.Name
+
+# Color variables
+$GREEN = "`e[0;32m"
+$MAGENTA = "`e[0;95m"
+$NC = "`e[0m"
+$RED = "`e[0;31m"
+$YELLOW = "`e[0;33m"
+
+# Determine the SQLite executable name
+if ($IsWindows) {
+    $sqlite = "sqlite3.exe"
+} else {
+    $sqlite = "sqlite3"
+}
+
+# Function to show help
+function Show-Help {
+    Write-Host "Usage: ./${script} [options]" -NoNewline
+    Write-Host "`n${YELLOW}Options:${NC}" -NoNewline
+    Write-Host "`n`t-h  ${GREEN}Show Help ${NC}" -NoNewline
+    Write-Host "`n`t-c  ${MAGENTA}Creates a users table ${NC}" -NoNewline
+    Write-Host "`n`t-s  ${MAGENTA}Shows all records in the users table ${NC}" -NoNewline
+    Write-Host "`n`t-r  ${RED}Removes users table ${NC}"
+}
+
+# Function to remove the database
+function Remove-DB {
+    if (Test-Path "users.sqlite") {
+        Remove-Item -Force "users.sqlite"
+        Write-Host "${GREEN}Database removed.${NC}"
+    } else {
+        Write-Host "${YELLOW}Database does not exist.${NC}"
+    }
+}
+
+# Function to create the database
+function Create-DB {
+    $createTableSQL = @"
+    CREATE TABLE IF NOT EXISTS users (
+        user_id INTEGER not null,
+        name TEXT NOT NULL
+    );
+"@
+    $createTableSQL | & $sqlite users.sqlite
+    Write-Host "${GREEN}Database created.${NC}"
+}
+
+# Function to show database records
+function Show-DB {
+    $querySQL = "SELECT * FROM users;"
+    $querySQL | & $sqlite users.sqlite
+}
+
+# If no arguments, show help and exit
+if ($args.Count -eq 0) {
+    Show-Help
+    exit
+}
+
+# Parse arguments
+while ($args.Count -gt 0) {
+    switch ($args[0]) {
+        '-h' {
+            Show-Help
+            exit
+        }
+        '-c' {
+            Create-DB
+        }
+        '-s' {
+            Show-DB
+        }
+        '-r' {
+            Remove-DB
+        }
+        default {
+            Write-Host "${RED}Invalid option: $($args[0])${NC}"
+            Show-Help
+            exit
+        }
+    }
+    if ($args.Count -gt 1) {
+        $args = $args[1..($args.Count - 1)]
+    } else {
+        $args = @()
+    }
+}
diff --git a/build.ps1 b/build.ps1
new file mode 100644
index 0000000..5cfa7c1
--- /dev/null
+++ b/build.ps1
@@ -0,0 +1,7 @@
+# Change directory
+Set-Location -Path "$HOME\work-gh\codeql-intro-csharp\SqliDemo"
+
+# Build the project
+dotnet build
+
+Set-Location -Path "$HOME\work-gh\codeql-intro-csharp\"
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..ba9eabc
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+cd ~/work-gh/codeql-intro-csharp/SqliDemo
+dotnet build
diff --git a/codeql-intro-csharp.code-workspace b/codeql-intro-csharp.code-workspace
new file mode 100644
index 0000000..517e0b2
--- /dev/null
+++ b/codeql-intro-csharp.code-workspace
@@ -0,0 +1,8 @@
+{
+	"folders": [
+		{
+			"path": "."
+		}
+    ],
+    "settings": {}
+}
\ No newline at end of file
diff --git a/codeql-pack.lock.yml b/codeql-pack.lock.yml
new file mode 100644
index 0000000..d96ac38
--- /dev/null
+++ b/codeql-pack.lock.yml
@@ -0,0 +1,24 @@
+---
+lockVersion: 1.0.0
+dependencies:
+  codeql/controlflow:
+    version: 1.0.12
+  codeql/csharp-all:
+    version: 3.1.1
+  codeql/dataflow:
+    version: 1.1.6
+  codeql/mad:
+    version: 1.0.12
+  codeql/ssa:
+    version: 1.0.12
+  codeql/threat-models:
+    version: 1.0.12
+  codeql/tutorial:
+    version: 1.0.12
+  codeql/typetracking:
+    version: 1.0.12
+  codeql/util:
+    version: 1.0.12
+  codeql/xml:
+    version: 1.0.12
+compiled: false
diff --git a/csharp-sqli.sarif b/csharp-sqli.sarif
new file mode 100644
index 0000000..1869880
--- /dev/null
+++ b/csharp-sqli.sarif
@@ -0,0 +1,383 @@
+{
+  "$schema": "https://json.schemastore.org/sarif-2.1.0.json",
+  "version": "2.1.0",
+  "runs": [
+    {
+      "tool": {
+        "driver": {
+          "name": "CodeQL",
+          "organization": "GitHub",
+          "semanticVersion": "2.19.2",
+          "notifications": [
+            {
+              "id": "cs/baseline/expected-extracted-files",
+              "name": "cs/baseline/expected-extracted-files",
+              "shortDescription": {
+                "text": "Expected extracted files"
+              },
+              "fullDescription": {
+                "text": "Files appearing in the source archive that are expected to be extracted."
+              },
+              "defaultConfiguration": {
+                "enabled": true
+              },
+              "properties": {
+                "tags": [
+                  "expected-extracted-files",
+                  "telemetry"
+                ]
+              }
+            },
+            {
+              "id": "cli/sip-enablement",
+              "name": "cli/sip-enablement",
+              "shortDescription": {
+                "text": "macOS SIP enablement status"
+              },
+              "fullDescription": {
+                "text": "macOS SIP enablement status"
+              },
+              "defaultConfiguration": {
+                "enabled": true
+              }
+            }
+          ],
+          "rules": [
+            {
+              "id": "csharp/intro/FindFunction",
+              "name": "csharp/intro/FindFunction",
+              "shortDescription": {
+                "text": "Find Function"
+              },
+              "fullDescription": {
+                "text": "List certain functions in a DB"
+              },
+              "defaultConfiguration": {
+                "enabled": true,
+                "level": "warning"
+              },
+              "properties": {
+                "description": "List certain functions in a DB",
+                "id": "csharp/intro/FindFunction",
+                "kind": "problem",
+                "name": "Find Function",
+                "problem.severity": "warning"
+              }
+            }
+          ]
+        },
+        "extensions": [
+          {
+            "name": "sample/csharp-sql-injection",
+            "semanticVersion": "0.0.1",
+            "locations": [
+              {
+                "uri": "file:///Users/hohn/work-gh/codeql-intro-csharp/",
+                "description": {
+                  "text": "The QL pack root directory."
+                },
+                "properties": {
+                  "tags": [
+                    "CodeQL/LocalPackRoot"
+                  ]
+                }
+              },
+              {
+                "uri": "file:///Users/hohn/work-gh/codeql-intro-csharp/qlpack.yml",
+                "description": {
+                  "text": "The QL pack definition file."
+                },
+                "properties": {
+                  "tags": [
+                    "CodeQL/LocalPackDefinitionFile"
+                  ]
+                }
+              }
+            ]
+          },
+          {
+            "name": "codeql/csharp-all",
+            "semanticVersion": "3.1.1+de325133c7a95d84489acdf5a6ced07886ff5c6d",
+            "locations": [
+              {
+                "uri": "file:///Users/hohn/.codeql/packages/codeql/csharp-all/3.1.1/",
+                "description": {
+                  "text": "The QL pack root directory."
+                },
+                "properties": {
+                  "tags": [
+                    "CodeQL/LocalPackRoot"
+                  ]
+                }
+              },
+              {
+                "uri": "file:///Users/hohn/.codeql/packages/codeql/csharp-all/3.1.1/qlpack.yml",
+                "description": {
+                  "text": "The QL pack definition file."
+                },
+                "properties": {
+                  "tags": [
+                    "CodeQL/LocalPackDefinitionFile"
+                  ]
+                }
+              }
+            ]
+          },
+          {
+            "name": "codeql/threat-models",
+            "semanticVersion": "1.0.12+de325133c7a95d84489acdf5a6ced07886ff5c6d",
+            "locations": [
+              {
+                "uri": "file:///Users/hohn/.codeql/packages/codeql/threat-models/1.0.12/",
+                "description": {
+                  "text": "The QL pack root directory."
+                },
+                "properties": {
+                  "tags": [
+                    "CodeQL/LocalPackRoot"
+                  ]
+                }
+              },
+              {
+                "uri": "file:///Users/hohn/.codeql/packages/codeql/threat-models/1.0.12/qlpack.yml",
+                "description": {
+                  "text": "The QL pack definition file."
+                },
+                "properties": {
+                  "tags": [
+                    "CodeQL/LocalPackDefinitionFile"
+                  ]
+                }
+              }
+            ]
+          }
+        ]
+      },
+      "invocations": [
+        {
+          "toolExecutionNotifications": [
+            {
+              "locations": [
+                {
+                  "physicalLocation": {
+                    "artifactLocation": {
+                      "uri": "SqliDemo/Injectable.cs",
+                      "uriBaseId": "%SRCROOT%",
+                      "index": 0
+                    }
+                  }
+                }
+              ],
+              "message": {
+                "text": ""
+              },
+              "level": "none",
+              "descriptor": {
+                "id": "cs/baseline/expected-extracted-files",
+                "index": 0
+              },
+              "properties": {
+                "formattedMessage": {
+                  "text": ""
+                }
+              }
+            },
+            {
+              "locations": [
+                {
+                  "physicalLocation": {
+                    "artifactLocation": {
+                      "uri": "HelloWorld/Program.cs",
+                      "uriBaseId": "%SRCROOT%",
+                      "index": 1
+                    }
+                  }
+                }
+              ],
+              "message": {
+                "text": ""
+              },
+              "level": "none",
+              "descriptor": {
+                "id": "cs/baseline/expected-extracted-files",
+                "index": 0
+              },
+              "properties": {
+                "formattedMessage": {
+                  "text": ""
+                }
+              }
+            },
+            {
+              "message": {
+                "text": ""
+              },
+              "level": "note",
+              "timeUtc": "2024-12-03T18:57:27.937528Z",
+              "descriptor": {
+                "id": "cli/sip-enablement",
+                "index": 1
+              },
+              "properties": {
+                "attributes": {
+                  "isEnabled": true
+                },
+                "visibility": {
+                  "statusPage": false,
+                  "telemetry": true
+                }
+              }
+            }
+          ],
+          "executionSuccessful": true
+        }
+      ],
+      "artifacts": [
+        {
+          "location": {
+            "uri": "SqliDemo/Injectable.cs",
+            "uriBaseId": "%SRCROOT%",
+            "index": 0
+          }
+        },
+        {
+          "location": {
+            "uri": "HelloWorld/Program.cs",
+            "uriBaseId": "%SRCROOT%",
+            "index": 1
+          }
+        }
+      ],
+      "results": [
+        {
+          "ruleId": "csharp/intro/FindFunction",
+          "ruleIndex": 0,
+          "rule": {
+            "id": "csharp/intro/FindFunction",
+            "index": 0
+          },
+          "message": {
+            "text": "Method found"
+          },
+          "locations": [
+            {
+              "physicalLocation": {
+                "artifactLocation": {
+                  "uri": "SqliDemo/Injectable.cs",
+                  "uriBaseId": "%SRCROOT%",
+                  "index": 0
+                },
+                "region": {
+                  "startLine": 8,
+                  "startColumn": 19,
+                  "endColumn": 31
+                }
+              }
+            }
+          ],
+          "partialFingerprints": {
+            "primaryLocationLineHash": "e9487b577ff946ef:1",
+            "primaryLocationStartColumnFingerprint": "14"
+          }
+        },
+        {
+          "ruleId": "csharp/intro/FindFunction",
+          "ruleIndex": 0,
+          "rule": {
+            "id": "csharp/intro/FindFunction",
+            "index": 0
+          },
+          "message": {
+            "text": "Method found"
+          },
+          "locations": [
+            {
+              "physicalLocation": {
+                "artifactLocation": {
+                  "uri": "SqliDemo/Injectable.cs",
+                  "uriBaseId": "%SRCROOT%",
+                  "index": 0
+                },
+                "region": {
+                  "startLine": 17,
+                  "startColumn": 16,
+                  "endColumn": 24
+                }
+              }
+            }
+          ],
+          "partialFingerprints": {
+            "primaryLocationLineHash": "7aff2558b806fcc8:1",
+            "primaryLocationStartColumnFingerprint": "11"
+          }
+        },
+        {
+          "ruleId": "csharp/intro/FindFunction",
+          "ruleIndex": 0,
+          "rule": {
+            "id": "csharp/intro/FindFunction",
+            "index": 0
+          },
+          "message": {
+            "text": "Method found"
+          },
+          "locations": [
+            {
+              "physicalLocation": {
+                "artifactLocation": {
+                  "uri": "SqliDemo/Injectable.cs",
+                  "uriBaseId": "%SRCROOT%",
+                  "index": 0
+                },
+                "region": {
+                  "startLine": 22,
+                  "startColumn": 13,
+                  "endColumn": 22
+                }
+              }
+            }
+          ],
+          "partialFingerprints": {
+            "primaryLocationLineHash": "727c2f8457995f1b:1",
+            "primaryLocationStartColumnFingerprint": "12"
+          }
+        },
+        {
+          "ruleId": "csharp/intro/FindFunction",
+          "ruleIndex": 0,
+          "rule": {
+            "id": "csharp/intro/FindFunction",
+            "index": 0
+          },
+          "message": {
+            "text": "Method found"
+          },
+          "locations": [
+            {
+              "physicalLocation": {
+                "artifactLocation": {
+                  "uri": "SqliDemo/Injectable.cs",
+                  "uriBaseId": "%SRCROOT%",
+                  "index": 0
+                },
+                "region": {
+                  "startLine": 47,
+                  "startColumn": 17,
+                  "endColumn": 21
+                }
+              }
+            }
+          ],
+          "partialFingerprints": {
+            "primaryLocationLineHash": "e39b50fafc292b5d:1",
+            "primaryLocationStartColumnFingerprint": "12"
+          }
+        }
+      ],
+      "columnKind": "utf16CodeUnits",
+      "properties": {
+        "semmle.formatSpecifier": "sarif-latest"
+      }
+    }
+  ]
+}
diff --git a/csharp-sqli.txt b/csharp-sqli.txt
new file mode 100644
index 0000000..70e0b9f
--- /dev/null
+++ b/csharp-sqli.txt
@@ -0,0 +1,8 @@
+csharp/intro/FindFunction: Method found [0 more]
+        SqliDemo/Injectable.cs:8:
+csharp/intro/FindFunction: Method found [0 more]
+        SqliDemo/Injectable.cs:17:
+csharp/intro/FindFunction: Method found [0 more]
+        SqliDemo/Injectable.cs:22:
+csharp/intro/FindFunction: Method found [0 more]
+        SqliDemo/Injectable.cs:47:
diff --git a/qlpack.yml b/qlpack.yml
new file mode 100644
index 0000000..692afcf
--- /dev/null
+++ b/qlpack.yml
@@ -0,0 +1,5 @@
+library: false
+name: workshop/csharp-sql-injection
+version: 0.0.1
+dependencies:
+  codeql/csharp-all: "*"
diff --git a/sarif-summary.jq b/sarif-summary.jq
new file mode 100644
index 0000000..1f60353
--- /dev/null
+++ b/sarif-summary.jq
@@ -0,0 +1,60 @@
+# -*- sh -*-
+.runs | .[] | .results | .[] |
+    ( (.ruleId, ": ", 
+       (.message.text | split("\n") | ( .[0], " [", length-1 , " more]")),
+       "\n")
+      , 
+      (if (.codeFlows != null) then
+          (.codeFlows | .[] | 
+               ("    Path\n"
+                ,
+                ( .threadFlows | .[] | .locations | .[] | .location | "        "
+                  ,
+                  ( .physicalLocation | ( .artifactLocation.uri, ":", .region.startLine, ":"))
+                  ,
+                  (.message.text, " ")
+                  , 
+                  "\n"
+                )))
+          else 
+              (.locations | .[] |
+                   ( "        "
+                     ,
+                     (.physicalLocation | ( .artifactLocation.uri, ":", .region.startLine, ":"))
+                   ))
+              ,
+              # .message.text, 
+              "\n"
+              end)
+    )  | tostring 
+
+# This script extracts the following parts of the sarif output:
+# 
+# # problem
+# "runs" : [ {
+#   "results" : [ {
+#     "ruleId" : "cpp/UncheckedErrorCode",
+
+# # path problem
+# "runs" : [ {
+#   "tool" : {
+#     "driver" : {
+#       "rules" : [ {
+#         "properties" : {
+#           "kind" : "path-problem",
+
+# "runs" : [ {
+#   "results" : [ {
+#     "ruleId" : "cpp/DangerousArithmetic",
+#     "ruleIndex" : 6,
+#     "message" : {
+#       "text" : "Potential overflow (conversion: int -> unsigned int)\nPotential overflow (con
+
+# "runs" : [ {
+#   "results" : [ {
+#     "codeFlows" : [ {
+#       "threadFlows" : [ {
+#         "locations" : [ {
+#           "location" : {
+#             "message" : {
+#               "text" : "buff"