如何在ViewState中更新gridView列 [英] How to update gridView columns in viewstate

问题描述

Haiiii
我在GridView中有4行，每行有9列，GridView保持在Viewstate中.在GridView行中，两列是TextBox字段.

当我更改TextBox字段时，GridView中将反映三个列.因此，我需要知道如何将这些列存储在Viewstate中而不是行中.请告诉我怎么做.

在此先感谢

Haiiii
I have 4 rows in GridView, each row having 9 columns, GridView is maintained in Viewstate. In GridView row two columns are TextBox-fields.

When i change the TextBox-field then three coumns are reflected in GridView. So, i need to know how to store these columns in Viewstate instead of row. Please tell me how to do.

Thanks in advance

推荐答案

在这里访问..

http://aspnet-with-c- sharp.blogspot.com/2010/12/viewstate-with-example-in-aspnet-c.html [

visit here..

http://aspnet-with-c-sharp.blogspot.com/2010/12/viewstate-with-example-in-aspnet-c.html[^]

if(ViewState [ "PdataTable"] == null)
{
TempDTable.Columns.Add("QuestionID"，typeof(string));
TempDTable.Columns.Add("ColumnName"，typeof(string));
TempDTable.Columns.Add("ColumnType"，typeof(string));
TempDTable.Columns.Add("OptionValues"，typeof(string));
}
其他
{
TempDTable =(DataTable)ViewState ["PdataTable"];
}
DataRow行；
行= TempDTable.NewRow();


TextBox txtftrColName =(TextBox)GridViewColumns.FooterRow.FindControl("txtftrColName");
DropDownList DrpType =(DropDownList)GridViewColumns.FooterRow.FindControl("DrpType");
TextBox txtValues =(TextBox)GridViewColumns.FooterRow.FindControl("txtValues");

row ["QuestionID"] = Qst3.Text;
row ["ColumnName"] = txtftrColName.Text;
row ["ColumnType"] = DrpType.SelectedItem.Text;
row ["OptionValues"] = txtValues.Text;

TempDTable.Rows.Add(row);
ViewState ["PdataTable"] = TempDTable;
this.GridViewColumns.Visible = true;

GridViewColumns.DataSource = TempDTable;
GridViewColumns.DataBind();

if (ViewState["PdataTable"] == null)
{
TempDTable.Columns.Add("QuestionID", typeof(string));
TempDTable.Columns.Add("ColumnName", typeof(string));
TempDTable.Columns.Add("ColumnType", typeof(string));
TempDTable.Columns.Add("OptionValues", typeof(string));
}
else
{
TempDTable = (DataTable)ViewState["PdataTable"];
}
DataRow row;
row = TempDTable.NewRow();


TextBox txtftrColName = (TextBox)GridViewColumns.FooterRow.FindControl("txtftrColName");
DropDownList DrpType = (DropDownList)GridViewColumns.FooterRow.FindControl("DrpType");
TextBox txtValues = (TextBox)GridViewColumns.FooterRow.FindControl("txtValues");

row["QuestionID"] = Qst3.Text;
row["ColumnName"] = txtftrColName.Text;
row["ColumnType"] = DrpType.SelectedItem.Text;
row["OptionValues"] = txtValues.Text;

TempDTable.Rows.Add(row);
ViewState["PdataTable"] = TempDTable;
this.GridViewColumns.Visible = true;

GridViewColumns.DataSource = TempDTable;
GridViewColumns.DataBind();

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