How to access ssis package variables inside script component

How to access ssis package variables inside script component

In SSIS, you can access package-level variables from a script component using the Variables property of the IDTSVariables100 interface. Here is an example code snippet that demonstrates how to do this:

using System;
using System.Data;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
using Microsoft.SqlServer.Dts.Runtime.Wrapper;

[Microsoft.SqlServer.Dts.Pipeline.SSISScriptComponentEntryPointAttribute]
public class ScriptMain : UserComponent
{
    private int myVariable;

    public override void PreExecute()
    {
        base.PreExecute();

        // Get the value of the "MyVariable" package variable
        Variables vars = null;
        this.VariableDispenser.LockForRead("MyVariable");
        this.VariableDispenser.GetVariables(out vars);
        vars["MyVariable"].TryGetValue(this.myVariable);
        this.VariableDispenser.Unlock();
    }

    public override void Input0_ProcessInputRow(Input0Buffer Row)
    {
        // Use the value of the "MyVariable" package variable
        int newValue = Row.Value + this.myVariable;
        Row.Value = newValue;
    }
}

In this example, we define a new script component that reads a package-level variable called "MyVariable" and adds its value to the input rows. We declare a private integer variable called myVariable to store the value of the package variable.

In the PreExecute() method, we use the VariableDispenser.LockForRead() method to lock the "MyVariable" variable for reading, and then we use the VariableDispenser.GetVariables() method to get the Variables object for the component. We then use the TryGetValue() method of the Variables object to get the value of the "MyVariable" variable and store it in the myVariable variable. Finally, we use the VariableDispenser.Unlock() method to release the lock on the variable.

In the Input0_ProcessInputRow() method, we add the value of myVariable to the Value column of the input row, and then set the updated row as the output row.

Note that the VariableDispenser property of the script component provides access to the IDTSVariableDispenser100 interface, which is used to manage package-level variables in SSIS. The Variables property of the IDTSVariableDispenser100 interface provides access to the IDTSVariables100 interface, which is used to get and set the values of package-level variables.

Examples

  1. "SSIS Script Component access package variables"

    • Description: Learn the basic approach to access package variables in a Script Component.
    // Code Implementation:
public override void Input0_ProcessInputRow(Input0Buffer Row)
{
    var variableValue = Variables.VariableName;
    // Access package variable as needed
}

  2. "SSIS Script Component read-write package variables"

    • Description: Access and modify read-write package variables in a Script Component.
    // Code Implementation:
public override void Input0_ProcessInputRow(Input0Buffer Row)
{
    Variables.VariableName = "NewValue";
    var variableValue = Variables.VariableName;
    // Access and modify read-write package variable as needed
}

  3. "SSIS Script Component access package variables in asynchronous mode"

    • Description: Access package variables in a Script Component configured for asynchronous processing.
    // Code Implementation:
public override async Task<Input0Buffer> ProcessInputAsync(Input0Buffer Row)
{
    var variableValue = Variables.VariableName;
    // Access package variable in asynchronous mode as needed
    return Row;
}

  4. "SSIS Script Component access package variables in PostExecute phase"

    • Description: Access package variables in the PostExecute phase of a Script Component.
    // Code Implementation:
public override void PostExecute()
{
    var variableValue = Variables.VariableName;
    // Access package variable in PostExecute phase as needed
}

  5. "SSIS Script Component access package variables in PreExecute phase"

    • Description: Access package variables in the PreExecute phase of a Script Component.
    // Code Implementation:
public override void PreExecute()
{
    var variableValue = Variables.VariableName;
    // Access package variable in PreExecute phase as needed
}

  6. "SSIS Script Component access package variables in synchronous mode"

    • Description: Access package variables in a Script Component configured for synchronous processing.
    // Code Implementation:
public override void Input0_ProcessInputRow(Input0Buffer Row)
{
    var variableValue = Variables.VariableName;
    // Access package variable in synchronous mode as needed
}

  7. "SSIS Script Component access package variables using ReadOnlyVariables"

    • Description: Access package variables using ReadOnlyVariables property in a Script Component.
    // Code Implementation:
public override void Input0_ProcessInputRow(Input0Buffer Row)
{
    var variableValue = ReadOnlyVariables.VariableName;
    // Access read-only package variable as needed
}

  8. "SSIS Script Component access package variables using ReadWriteVariables"

    • Description: Access package variables using ReadWriteVariables property in a Script Component.
    // Code Implementation:
public override void Input0_ProcessInputRow(Input0Buffer Row)
{
    WriteVariables.VariableName = "NewValue";
    var variableValue = ReadWriteVariables.VariableName;
    // Access and modify read-write package variable as needed
}

  9. "SSIS Script Component access package variables in multiple phases"

    • Description: Access package variables in multiple phases of a Script Component.
    // Code Implementation:
public override void PreExecute()
{
    var variableValuePre = Variables.VariableName;
    // Access package variable in PreExecute phase as needed
}

public override void Input0_ProcessInputRow(Input0Buffer Row)
{
    var variableValueDuringProcessing = Variables.VariableName;
    // Access package variable during processing as needed
}

public override void PostExecute()
{
    var variableValuePost = Variables.VariableName;
    // Access package variable in PostExecute phase as needed
}

  10. "SSIS Script Component access package variables with multiple Script Components"

    • Description: Access package variables across multiple Script Components in an SSIS package.
    // Code Implementation:
public override void Input0_ProcessInputRow(Input0Buffer Row)
{
    var variableValue = Variables.VariableName;
    // Access package variable in Script Component 1 as needed
}

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