convert dataset to list.

I have a dataset which is populated from an SQL Pivot table. This means I never know exactly how many columns I am going to have or the column names.

I woult like to convert into a list<>.

I am not sure how to achieve this.

Can anybody give me any pointers?

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Hi Mr_Shaw;

The below code snippet should give what you need.

Fernando

DataTable dt = new DataTable();
List<string> listData;
 
private void button1_Click(object sender, EventArgs e)
{
    StringBuilder sb = new StringBuilder();
    listData = new List<string>();
 
    // Load the stringBuilder with the column names
    foreach (DataColumn col in dt.Columns)
    {
        sb.Append(col.ColumnName + ",");
    }
    // Assign the column names to the first element of the List<> without the last comma
    listData.Add(sb.ToString().Substring(0, sb.Length -1));
 
    // Find out how many columna are in each row
    int ColumnCount = dt.Columns.Count;
    // Get the row data and fill the List<string> with one row per element
    foreach (DataRow dr in dt.Rows)
    {
        // Clear the StringBuilder for the next row
        sb.Length = 0;
        for (int idx = 0; idx < ColumnCount; idx++)
        {
            // add each column to the StringBuilder
            sb.Append(((dr[idx] == DBNull.Value) ? String.Empty : dr[idx].ToString()) + ",");
        }
        // Add the row of data to the List<String>
        listData.Add(sb.ToString().Substring(0, sb.Length - 1));
    }
}

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convert dataset to list.

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