How to change Format Formula for field of Crystal Report programmatically ?

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When we want to chang the color of any field of Crystal Report we change the formatting formula of the field
and we do that >>right mouse button on Field>>FormatObject>>Font>>Color and press the formula button
in the Editor we put the code

C#

If {dtStudents.Mark} > 1 Then
    crGreen

and the color of the field will change when the value is > 1

My Question is How we do that programmatically ?

Posted 9-Jun-12 8:46am

masalahi

Updated 9-Jun-12 13:16pm

v2

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Sandeep Mewara 9-Jun-12 14:52pm

This is not a well framed question! We cannot work out what you are trying to do/ask from the post. Please elaborate and be specific.
Use the "Improve question" link to edit your question and provide better information.

thatraja 10-Jun-12 4:58am

Why downvotes? It's a tricky question, Have 5 from me.

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thatraja · Answer 1 · 2012-06-09T22:57:00

You could use parameter fields[^].

In report, create a parameter field prmMark.

Change the formula something like as below

SQL

If {dtStudents.Mark} > @prmMark Then
    crGreen

Now, from from your code-behind send the value to parameter field prmMark. Sample code from above link.

C#

private void button1_Click(object sender, EventArgs e)
{
    ReportDocument cryRpt = new ReportDocument();
    cryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt");

    ParameterFieldDefinitions crParameterFieldDefinitions ;
    ParameterFieldDefinition crParameterFieldDefinition ;
    ParameterValues crParameterValues = new ParameterValues();
    ParameterDiscreteValue crParameterDiscreteValue = new ParameterDiscreteValue();

    crParameterDiscreteValue.Value = Convert.ToInt32(textBox1.Text);
    crParameterFieldDefinitions = cryRpt.DataDefinition.ParameterFields;
    crParameterFieldDefinition = crParameterFieldDefinitions["prmMark"];
    crParameterValues = crParameterFieldDefinition.CurrentValues;

    crParameterValues.Clear();
    crParameterValues.Add(crParameterDiscreteValue);
    crParameterFieldDefinition.ApplyCurrentValues(crParameterValues);

    crystalReportViewer1.ReportSource = cryRpt;
    crystalReportViewer1.Refresh();

}