Question

我正在使用我的c＃windows应用程序，这是第一次使用tdbgrid（component1）现在我想阻止用户从数据库验证后输入重复值，下面是我在其中使用的代码（BeforeColUpdate）事件：

bool ExitValue = false;
private void C1TrueDBGrid_BeforeColUpdate(object sender, C1.Win.C1TrueDBGrid.BeforeColUpdateEventArgs e)
{
    if (e.Column.Name == "Groups Code")
    {
        for (int currentRow = 0; currentRow < this.C1TrueDBGrid.Rows.Count - 1;currentRow++)
        {
            string rowToCompare = this.C1TrueDBGrid.Splits[0].DisplayColumns[C1TrueDBGrid.Col].DataColumn.CellValue(currentRow).ToString();
            for (int otherRow = currentRow+1 ; otherRow < this.C1TrueDBGrid.Rows.Count; otherRow++)
            { 
                bool DuplicatedRow = true;
                string Row = this.C1TrueDBGrid.Splits[0].DisplayColumns[C1TrueDBGrid.Col].DataColumn.CellValue(otherRow).ToString();
                if (Row!=rowToCompare)
                {
                    ExitValue = false;
                    break;
                }
                if (DuplicatedRow)
                {
                    C1TrueDBGrid.Splits[0].DisplayColumns[tgdGroupsUsers.Col].DataColumn.Value = DBNull.Value;
                    MessageBox.Show("Sorry: but this item(s) is already Exists  ", "Error Info", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    ExitValue = true;
                    e.Cancel = true;
                }
            }
        }         
    }
    else
    {
        //Cleare Feilds
        C1TrueDBGrid.Splits[0].DisplayColumns[C1TrueDBGrid.Col].DataColumn.Value = null;
        e.Cancel = true;
    }
}

如果不是duplictad以下是我在其中使用它的代码（AfterColUpdate）事件：

private void C1TrueDBGrid_AfterColUpdate(object sender, C1.Win.C1TrueDBGrid.ColEventArgs e)
{
    if (!ExitValue)
    {
        int indexRow = this.C1TrueDBGrid.RowBookmark(this.C1TrueDBGrid.Row);
        this.C1TrueDBGrid[indexRow, 0] = CSystemUsers.GroupsCode;
        this.C1TrueDBGrid[indexRow, 0] = CSystemUsers.EngName;
    }
}

提前感谢...

Answer 1

componentone回答我的问题：

public static class Program
{
    static Program()
    {
        // Initialize logging
        log4net.Config.XmlConfigurator.Configure();
    }

    private static readonly ILog log =
        LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

    ...
}

链接： http://our.componentone.com/groups/topic/how-do-i-prevent-duplicate-entries-in-c1truedbgrid/ 希望这对未来的其他人有所帮助：

防止C1TrueDBGrid中的重复条目

1 个答案: