retriving value from viewstate

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Hello

Plz tell how to find a specific value from view state,

i have 3 cloumns in viewstate,sNO, Name, Contact respectively.

i want to find sNo for comparing in IF() condition ,

Please Answers,,

Posted 6-Oct-13 21:22pm

xibit89

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Comments

Zafar Sultan 7-Oct-13 3:28am

How are you storing the values in viewstate?

xibit89 7-Oct-13 3:34am

CheckBox cBox2 = null;
for (int i = 0; i < lvItemTone2.Items.Count(); i++)
{
cBox2 = (CheckBox)lvItemTone2.Items[i].FindControl("lvTone2chckSelect");
if (cBox2.Checked)
{
ItemCode = ((DropDownList)GridView1.FooterRow.FindControl("ddlItemCode")).SelectedItem.Text.ToString();
BatchNo = ((Label)lvItemTone2.Items[i].FindControl("lblBatchNo")).Text;
Quantity = ((Label)lvItemTone2.Items[i].FindControl("lblQty")).Text;
SelectedQuantity = ((Label)lvItemTone2.Items[i].FindControl("lblSelQty")).Text;

dr = dt.NewRow();
dr["BatchNo"] = BatchNo;
dr["Quantity"] = Quantity;
dr["SelectedQuantity"] = SelectedQuantity;

if (dr != null)
{
dt.Rows.Add(dr);
}
}
}
ViewState["BatchTable"] = dt;
lvItemTone2.DataSource = dt;
lvItemTone2.DataBind();

Azee 7-Oct-13 4:21am

Hey there, I don't see sNO, Name or Contact being saved in the ViewState, there is BatchNo, Quantity and SelectedQuantity.

xibit89 7-Oct-13 4:28am

yep sNO, Name, Contact i used for explaning.. above is the actual code

4 solutions

Solution 1

First you have convert your viewstate to a specific type like datatable, List<clasobject>
Then you can filter it.
Ex.
DataTable myDt=(DataTable)ViewState["viewstatename"];

From myDt you can filter your datab by the if condition
See I have not given any code it's a format to understand the concept

Posted 6-Oct-13 21:33pm

sankarsan parida

Solution 2

first of All you have to convert this viewstate into datatable
For Example

datattable abc=(datatable)viewstate("temp");
after this

you will type abc.Rows[0]["sNO"].tostring()

try this

Posted 6-Oct-13 21:55pm

chitransh635

Solution 3

Since you are storing the data as a datatable you will have to retrieve it in the same way:

C#

DataTable YourDataTable = (DataTable)ViewState["BatchTable"];

string BatchNo = "";
string Quantity = "";
string SelectedQuantity = "";

for(int i = 0; i < YourDataTable.Rows.Count; i++)
{
BatchNo = YourDataTable[i]["BatchNo"].ToString();
Quantity = YourDataTable[i]["Quantity"].ToString();
SelectedQuantity = YourDataTable[i]["SelectedQuantity"].ToString();
}

Posted 6-Oct-13 21:57pm

Zafar Sultan

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**Azee** · Accepted Answer · 2013-10-06T23:35:00

Hey there,

Let's suppose you want to get BatchNo from the DataTable that you stored in the ViewState:

C#

if(ViewState["BatchTable"] != null)
{
    DataTable dt= (DataTable)ViewState["BatchTable"];
 
    for(int i = 0; i < dt.Rows.Count; i++)
    {
        string batchNo = dt.Rows[i]["BatchNo"].ToString();
        if(batchNo.Equals("Your Value to Compare"))
        {
            //Do Something
        }
    }
}

Hope this helps, let me know if this isn't what you were looking for.

Azee...